Online PHP editor | rfc for XZbgL

@ 2022-09-07T15:08:11Z

<?php

$data = [
    'NUM' => [
        101,
        102,
        103,
    ],
    'NOM' => [
        'Smith',
        'Robson',
        'Daniels',
    ],
    'PRENOM' => [
        'Alice',
        'Bob',
        'Charlie',
    ],
];

// Grab all possible outer keys
$outerKeys = array_keys($data);

// Make sure all child arrays are the same size
$innerCount = null;
foreach($outerKeys as $key) {
    
    // Also make sure that we've got a list so that we don't have to keep
    // track of child keys. For a 7.x polyfill see
    // https://www.php.net/manual/en/function.array-is-list.php
    if(!array_is_list($data[$key])){
        throw new RuntimeException('Child array is not a list');
    }
    
    // Count the first item
    if(null === $innerCount){
        $innerCount = count($data[$key]);
        continue;
    }
    
    // Compare the known count with the current child array
    if($innerCount !== count($data[$key])){
        throw new RuntimeException('Child array does not have equal item count');
    }
}

$lines = [];
for($idx = 0; $idx < $innerCount; $idx++){
    $buf = [];
    foreach($outerKeys as $key){
        $buf[] = $key . ':' . $data[$key][$idx];
    }
    $lines[] = implode(' ', $buf);
}

echo implode(PHP_EOL, $lines);

Output for git.master, git.master_jit, rfc.property-hooks: NUM:101 NOM:Smith PRENOM:Alice NUM:102 NOM:Robson PRENOM:Bob NUM:103 NOM:Daniels PRENOM:Charlie

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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